[scfr]

Kirkland Signature (Costco's private label) brand is very popular in our house:
Toilet Paper
Paper Towels
Facial Tissue
Laundry Detergent & Dryer Sheets
Shampoo & Conditioner
Vitamins
Dog Food
Olive Oil
Coffee
Yogurt
Milk
Almonds
Tortilla Chips

We also buy brand name items:
Feminine Hygiene Products
Toothpaste
Cleaning Supplies
Office supplies (toner, paper, etc)
Cereal (cold & hot)
Pasta SauceSalad Dressing
Wine
Frozen Fruits & Veggies
Frozen Burritos

And there are many, many other items I'm not remembering.

I go about once a month.